Bump node-sass from 4.14.0 to 4.14.1 in /packages/webapp

Bumps [node-sass](https://github.com/sass/node-sass) from 4.14.0 to 4.14.1.
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sass/node-sass/compare/v4.14.0...v4.14.1)

Signed-off-by: dependabot[bot] <support@github.com>

packages/webapp/package.json

@@ -20,7 +20,7 @@
     "gatsby-transformer-sharp": "2.5.14",
     "http-status-codes": "2.1.1",
     "jsonp": "0.2.1",
-    "node-sass": "4.14.0",
+    "node-sass": "4.14.1",
     "path-browserify": "1.0.1",
     "prop-types": "15.7.2",
     "react": "16.13.1",